[11295] | 1 | MODULE sbcclo |
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| 2 | !!====================================================================== |
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| 3 | !! *** MODULE sbcclo *** |
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[11629] | 4 | !! Ocean forcing: redistribution of emp unbalance over closed sea into river mouth or open ocean |
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[11295] | 5 | !!===================================================================== |
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[11629] | 6 | !! History : 4.0 and earlier ! see closea.F90 history |
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| 7 | !! NEMO 4.1 ! 2019-09 (P. Mathiot) rewrite sbc_clo module to match new closed sea mask definition (original sbcclo.F90) |
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| 8 | !! |
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[11295] | 9 | !!---------------------------------------------------------------------- |
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| 10 | ! |
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| 11 | !!---------------------------------------------------------------------- |
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[11629] | 12 | !! Public subroutines: |
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[11295] | 13 | !! sbc_clo : update emp and qns over target area and source area |
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| 14 | !! sbc_clo_init : initialise all variable needed for closed sea correction |
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| 15 | !! |
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[11629] | 16 | !! Private subroutines: |
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| 17 | !! alloc_csarr : allocate closed sea array |
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[11295] | 18 | !! get_cssrcsurf : compute source surface area |
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| 19 | !! get_cstrgsurf : compute target surface area |
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| 20 | !! prt_csctl : closed sea control print |
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| 21 | !! sbc_csupdate : compute net fw from closed sea |
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| 22 | !!---------------------------------------------------------------------- |
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| 23 | ! |
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[11656] | 24 | USE closea ! closed sea |
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| 25 | USE in_out_manager ! I/O manager |
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[11295] | 26 | ! |
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[11656] | 27 | USE dom_oce, ONLY: e1e2t ! ocean space and time domain |
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| 28 | USE phycst , ONLY: rcp ! physical constants |
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| 29 | USE sbc_oce, ONLY: emp, qns, rnf, sst_m ! ocean surface boundary conditions |
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| 30 | USE iom , ONLY: iom_put ! I/O routines |
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| 31 | USE lib_fortran, ONLY: glob_sum ! fortran library |
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| 32 | USE lib_mpp , ONLY: mpp_min, ctl_stop ! MPP library |
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[11295] | 33 | ! |
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| 34 | IMPLICIT NONE |
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| 35 | ! |
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[11629] | 36 | PRIVATE |
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[11295] | 37 | ! |
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| 38 | PUBLIC sbc_clo |
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| 39 | PUBLIC sbc_clo_init |
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| 40 | ! |
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[11629] | 41 | REAL(wp), PUBLIC, SAVE, ALLOCATABLE, DIMENSION(:) :: rsurfsrcg, rsurftrgg !: closed sea source/target glo surface areas |
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| 42 | REAL(wp), PUBLIC, SAVE, ALLOCATABLE, DIMENSION(:) :: rsurfsrcr, rsurftrgr !: closed sea source/target rnf surface areas |
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| 43 | REAL(wp), PUBLIC, SAVE, ALLOCATABLE, DIMENSION(:) :: rsurfsrce, rsurftrge !: closed sea source/target emp surface areas |
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[11295] | 44 | ! |
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[11629] | 45 | INTEGER, PUBLIC, SAVE, ALLOCATABLE, DIMENSION(:) :: mcsgrpg, mcsgrpr, mcsgrpe !: closed sea group for glo, rnf and emp |
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[11295] | 46 | ! |
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| 47 | CONTAINS |
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| 48 | ! |
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| 49 | !!---------------------------------------------------------------------- |
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| 50 | !! Public subroutines |
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| 51 | !!---------------------------------------------------------------------- |
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| 52 | ! |
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| 53 | SUBROUTINE sbc_clo_init |
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| 54 | !!--------------------------------------------------------------------- |
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| 55 | !! *** ROUTINE sbc_clo_init *** |
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| 56 | !! |
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[11629] | 57 | !! ** Purpose : Initialisation of the variable needed for the net fw closed sea correction |
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[11295] | 58 | !! |
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| 59 | !! ** Method : - compute source surface area for each closed sea |
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| 60 | !! - defined the group of each closed sea |
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[11629] | 61 | !! (needed to manage multiple closed sea and one target area like great lakes / St Laurent outlet) |
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| 62 | !! - compute target surface area |
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[11295] | 63 | !!---------------------------------------------------------------------- |
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| 64 | ! |
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| 65 | ! 0. Allocate cs variables (surf) |
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[11629] | 66 | CALL alloc_csarr( ncsg, rsurfsrcg, rsurftrgg, mcsgrpg ) |
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| 67 | CALL alloc_csarr( ncsr, rsurfsrcr, rsurftrgr, mcsgrpr ) |
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| 68 | CALL alloc_csarr( ncse, rsurfsrce, rsurftrge, mcsgrpe ) |
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[11295] | 69 | ! |
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| 70 | ! 1. compute source surface area |
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| 71 | CALL get_cssrcsurf( ncsg, mask_csglo, rsurfsrcg ) |
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| 72 | CALL get_cssrcsurf( ncsr, mask_csrnf, rsurfsrcr ) |
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| 73 | CALL get_cssrcsurf( ncse, mask_csemp, rsurfsrce ) |
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| 74 | ! |
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[11629] | 75 | ! 2. compute target surface area and group number (mcsgrp) for all cs and cases |
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[11295] | 76 | ! glo could be simpler but for lisibility, all treated the same way |
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| 77 | ! It is only done once, so not a big deal |
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| 78 | CALL get_cstrgsurf( ncsg, mask_csglo, mask_csgrpglo, rsurftrgg, mcsgrpg ) |
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| 79 | CALL get_cstrgsurf( ncsr, mask_csrnf, mask_csgrprnf, rsurftrgr, mcsgrpr ) |
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| 80 | CALL get_cstrgsurf( ncse, mask_csemp, mask_csgrpemp, rsurftrge, mcsgrpe ) |
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| 81 | ! |
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[11629] | 82 | ! 3. print out in ocean.ouput |
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| 83 | IF ( lwp ) WRITE(numout,*) 'sbc_clo_init : compute surface area for source (closed sea) and target (river mouth)' |
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| 84 | IF ( lwp ) WRITE(numout,*) '~~~~~~~~~~~~~~' |
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[11295] | 85 | CALL prt_csctl( ncsg, rsurfsrcg, rsurftrgg, mcsgrpg, 'glo' ) |
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| 86 | CALL prt_csctl( ncsr, rsurfsrcr, rsurftrgr, mcsgrpr, 'rnf' ) |
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| 87 | CALL prt_csctl( ncse, rsurfsrce, rsurftrge, mcsgrpe, 'emp' ) |
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| 88 | |
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| 89 | END SUBROUTINE sbc_clo_init |
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| 90 | |
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[11629] | 91 | SUBROUTINE sbc_clo( kt ) |
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[11295] | 92 | !!--------------------------------------------------------------------- |
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| 93 | !! *** ROUTINE sbc_clo *** |
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| 94 | !! |
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| 95 | !! ** Purpose : Special handling of closed seas |
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| 96 | !! |
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| 97 | !! ** Method : Water flux is forced to zero over closed sea |
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| 98 | !! Excess is shared between remaining ocean, or |
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| 99 | !! put as run-off in open ocean. |
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| 100 | !! |
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| 101 | !! ** Action : - compute surface freshwater fluxes and associated heat content flux at kt |
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| 102 | !! - output closed sea contribution to fw and heat budget |
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| 103 | !! - update emp and qns |
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| 104 | !!---------------------------------------------------------------------- |
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| 105 | INTEGER , INTENT(in ) :: kt ! ocean model time step |
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| 106 | ! |
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| 107 | REAL(wp), DIMENSION(jpi,jpj) :: zwcs, zqcs ! water flux and heat flux correction due to closed seas |
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| 108 | !!---------------------------------------------------------------------- |
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| 109 | ! |
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| 110 | ! 0. initialisation |
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| 111 | zwcs(:,:) = 0._wp ; zqcs(:,:) = 0._wp |
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| 112 | ! |
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| 113 | ! 1. update emp and qns |
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| 114 | CALL sbc_csupdate( ncsg, mcsgrpg, mask_csglo, mask_csgrpglo, rsurfsrcg, rsurftrgg, 'glo', mask_opnsea, rsurftrgg, zwcs, zqcs ) |
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| 115 | CALL sbc_csupdate( ncsr, mcsgrpr, mask_csrnf, mask_csgrprnf, rsurfsrcr, rsurftrgr, 'rnf', mask_opnsea, rsurftrgg, zwcs, zqcs ) |
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| 116 | CALL sbc_csupdate( ncse, mcsgrpe, mask_csemp, mask_csgrpemp, rsurfsrce, rsurftrge, 'emp', mask_opnsea, rsurftrgg, zwcs, zqcs ) |
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| 117 | ! |
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| 118 | ! 2. ouput closed sea contributions |
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| 119 | CALL iom_put('wclosea',zwcs) |
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| 120 | CALL iom_put('qclosea',zqcs) |
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| 121 | ! |
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| 122 | ! 3. update emp and qns |
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| 123 | emp(:,:) = emp(:,:) + zwcs(:,:) |
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| 124 | qns(:,:) = qns(:,:) + zqcs(:,:) |
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| 125 | ! |
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| 126 | END SUBROUTINE sbc_clo |
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| 127 | ! |
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| 128 | !!---------------------------------------------------------------------- |
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| 129 | !! Private subroutines |
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| 130 | !!---------------------------------------------------------------------- |
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| 131 | ! |
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| 132 | SUBROUTINE get_cssrcsurf(kncs, kmaskcs, psurfsrc) |
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| 133 | !!----------------------------------------------------------------------- |
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| 134 | !! *** routine get_cssrcsurf *** |
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| 135 | !! |
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| 136 | !! ** Purpose : compute closed sea (source) surface area |
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| 137 | !!---------------------------------------------------------------------- |
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| 138 | ! subroutine parameters |
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[11629] | 139 | INTEGER , INTENT(in ) :: kncs ! closed sea number |
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| 140 | INTEGER , DIMENSION(:,:), INTENT(in ) :: kmaskcs ! closed sea mask |
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| 141 | REAL(wp), DIMENSION(:) , INTENT( out) :: psurfsrc ! source surface area |
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[11295] | 142 | |
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| 143 | ! local variables |
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| 144 | INTEGER :: jcs ! loop index |
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| 145 | INTEGER, DIMENSION(jpi,jpj) :: imsksrc ! source mask |
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| 146 | !!---------------------------------------------------------------------- |
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| 147 | ! |
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| 148 | DO jcs = 1,kncs ! loop over closed seas |
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| 149 | ! |
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| 150 | ! 0. build river mouth mask for this lake |
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| 151 | WHERE ( kmaskcs == jcs ) |
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| 152 | imsksrc = 1 |
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| 153 | ELSE WHERE |
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| 154 | imsksrc = 0 |
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| 155 | END WHERE |
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| 156 | ! |
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| 157 | ! 1. compute target area |
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| 158 | psurfsrc(jcs) = glob_sum('closea', e1e2t(:,:) * imsksrc(:,:) ) |
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| 159 | ! |
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| 160 | END DO ! jcs |
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| 161 | |
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| 162 | END SUBROUTINE |
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| 163 | |
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| 164 | SUBROUTINE get_cstrgsurf(kncs, kmaskcs, kmaskcsgrp, psurftrg, kcsgrp ) |
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| 165 | !!----------------------------------------------------------------------- |
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| 166 | !! *** routine get_cstrgsurf *** |
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| 167 | !! |
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| 168 | !! ** Purpose : compute closed sea (target) surface area |
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| 169 | !!---------------------------------------------------------------------- |
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| 170 | ! subroutine parameters |
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[11629] | 171 | ! input |
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[11295] | 172 | INTEGER, INTENT(in ) :: kncs ! closed sea number |
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| 173 | INTEGER, DIMENSION(:,:), INTENT(in ) :: kmaskcs, kmaskcsgrp ! closed sea and group mask |
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| 174 | |
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[11629] | 175 | ! output |
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| 176 | INTEGER , DIMENSION(:) , INTENT( out) :: kcsgrp ! closed sea group number |
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| 177 | REAL(wp), DIMENSION(:) , INTENT( out) :: psurftrg ! target surface area |
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[11295] | 178 | |
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| 179 | ! local variables |
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| 180 | INTEGER :: jcs, jtmp ! tmp |
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[11629] | 181 | INTEGER, DIMENSION(jpi,jpj) :: imskgrp, imsksrc, imsktrg, imsk ! tmp group, source, target and tmp mask |
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[11295] | 182 | !!---------------------------------------------------------------------- |
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| 183 | ! |
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| 184 | DO jcs = 1,kncs ! loop over closed seas |
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| 185 | ! |
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| 186 | !! 0. find group number for cs number jcs |
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| 187 | imskgrp = kmaskcsgrp |
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| 188 | imsksrc = kmaskcs |
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| 189 | ! |
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[11629] | 190 | ! set cs value where cs is defined |
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| 191 | ! imsk = HUGE outside the cs id jcs |
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| 192 | imsk = HUGE(1) |
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| 193 | WHERE ( imsksrc == jcs ) imsk = jcs |
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[11295] | 194 | ! |
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[11629] | 195 | ! jtmp = jcs - group id for this lake |
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| 196 | imsk = imsk - imskgrp |
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| 197 | jtmp = MINVAL(imsk) ; CALL mpp_min('closea',jtmp) |
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| 198 | ! kcsgrp = group id corresponding to the cs id jcs |
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| 199 | ! kcsgrp(jcs)=(jcs - (jcs - group id))=group id |
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[11295] | 200 | kcsgrp(jcs) = jcs - jtmp |
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| 201 | ! |
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[11629] | 202 | !! 1. build the target river mouth mask for this lake |
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[11295] | 203 | WHERE ( imskgrp * mask_opnsea == kcsgrp(jcs) ) |
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| 204 | imsktrg = 1 |
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| 205 | ELSE WHERE |
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| 206 | imsktrg = 0 |
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| 207 | END WHERE |
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| 208 | ! |
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| 209 | !! 2. compute target area |
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| 210 | psurftrg(jcs) = glob_sum('closea', e1e2t(:,:) * imsktrg(:,:) ) |
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| 211 | ! |
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| 212 | END DO ! jcs |
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| 213 | |
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| 214 | END SUBROUTINE |
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| 215 | |
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| 216 | SUBROUTINE prt_csctl(kncs, psurfsrc, psurftrg, kcsgrp, cdcstype) |
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| 217 | !!----------------------------------------------------------------------- |
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| 218 | !! *** routine prt_csctl *** |
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| 219 | !! |
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| 220 | !! ** Purpose : output information about each closed sea (src id, trg id, src area and trg area) |
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| 221 | !!---------------------------------------------------------------------- |
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| 222 | ! subroutine parameters |
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| 223 | INTEGER, INTENT(in ) :: kncs ! closed sea number |
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| 224 | INTEGER, DIMENSION(:), INTENT(in ) :: kcsgrp ! closed sea group number |
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| 225 | ! |
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| 226 | REAL(wp), DIMENSION(:), INTENT(in ) :: psurfsrc, psurftrg ! source and target surface area |
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| 227 | ! |
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| 228 | CHARACTER(256), INTENT(in ) :: cdcstype ! closed sea scheme used for redistribution |
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| 229 | ! |
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| 230 | ! local variable |
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| 231 | INTEGER :: jcs |
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| 232 | !!---------------------------------------------------------------------- |
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| 233 | ! |
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| 234 | IF ( lwp .AND. kncs > 0 ) THEN |
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| 235 | WRITE(numout,*)'' |
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| 236 | ! |
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| 237 | WRITE(numout,*)'Closed sea target ',TRIM(cdcstype),' : ' |
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| 238 | ! |
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| 239 | DO jcs = 1,kncs |
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[11629] | 240 | WRITE(numout,FMT='(3a,i3,a,i3)') ' ',TRIM(cdcstype),' closed sea id is ',jcs,' and trg group id is : ', kcsgrp(jcs) |
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[11295] | 241 | WRITE(numout,FMT='(a,f12.2)' ) ' src surface areas (km2) : ', psurfsrc(jcs) * 1.0e-6 |
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| 242 | WRITE(numout,FMT='(a,f12.2)' ) ' trg surface areas (km2) : ', psurftrg(jcs) * 1.0e-6 |
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| 243 | END DO |
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| 244 | ! |
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| 245 | WRITE(numout,*)'' |
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| 246 | END IF |
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| 247 | |
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| 248 | END SUBROUTINE |
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| 249 | |
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[11629] | 250 | SUBROUTINE sbc_csupdate(kncs, kcsgrp, kmsk_src, kmsk_grp, psurfsrc, psurftrg, cdcstype, kmsk_opnsea, psurf_opnsea, pwcs, pqcs) |
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[11295] | 251 | !!----------------------------------------------------------------------- |
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| 252 | !! *** routine sbc_csupdate *** |
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| 253 | !! |
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| 254 | !! ** Purpose : - compute the net freshwater fluxes over each closed seas |
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| 255 | !! - apply correction to closed sea source/target net fwf accordingly |
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| 256 | !!---------------------------------------------------------------------- |
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| 257 | ! subroutine parameters |
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[11629] | 258 | INTEGER, INTENT(in) :: kncs ! closed sea id |
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| 259 | INTEGER, DIMENSION(: ), INTENT(in) :: kcsgrp ! closed sea group id |
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| 260 | INTEGER, DIMENSION(:,:), INTENT(in) :: kmsk_src, kmsk_grp, kmsk_opnsea ! source, target, open ocean mask |
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[11295] | 261 | |
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| 262 | REAL(wp), DIMENSION(:) , INTENT(in ) :: psurfsrc, psurftrg, psurf_opnsea ! source, target and open ocean surface area |
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| 263 | REAL(wp), DIMENSION(:,:), INTENT(inout) :: pwcs, pqcs ! water and heat flux correction due to closed seas |
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| 264 | |
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| 265 | CHARACTER(256), INTENT(in ) :: cdcstype ! closed sea scheme used for redistribution |
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| 266 | |
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| 267 | ! local variables |
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[11629] | 268 | INTEGER :: jcs ! loop index over closed sea |
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[11295] | 269 | INTEGER, DIMENSION(jpi,jpj) :: imsk_src, imsk_trg ! tmp array source and target closed sea masks |
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| 270 | |
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[11656] | 271 | REAL(wp) :: zcsfw, zcsh ! total fresh water and associated heat over one closed sea |
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| 272 | REAL(wp) :: zcsfwf ! mean fresh water flux over one closed sea |
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| 273 | REAL(wp) :: zsurftrg, zsurfsrc ! total target surface area |
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[11295] | 274 | !!---------------------------------------------------------------------- |
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| 275 | ! |
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| 276 | DO jcs = 1, kncs ! loop over closed seas |
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| 277 | ! |
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[11656] | 278 | !! 0. get mask and surface of the closed sea |
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| 279 | ! mask src |
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| 280 | WHERE ( kmsk_src(:,:) == jcs ) |
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| 281 | imsk_src(:,:) = 1 |
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| 282 | ELSEWHERE |
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| 283 | imsk_src(:,:) = 0 |
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| 284 | END WHERE |
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| 285 | ! area src |
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| 286 | zsurfsrc = psurfsrc(jcs) |
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[11295] | 287 | ! |
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[11656] | 288 | !! 1. Work out net freshwater over the closed sea from EMP - RNF. |
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| 289 | !! Work out net heat associated with the correction (needed for conservation) |
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[11629] | 290 | !! (PM: should we consider used delayed glob sum ?) |
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[11656] | 291 | zcsfw = glob_sum( 'closea', e1e2t(:,:) * ( emp(:,:)-rnf(:,:) ) * imsk_src(:,:) ) |
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[11295] | 292 | ! |
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| 293 | !! 2. Deal with runoff special case (net evaporation spread globally) |
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[11629] | 294 | !! and compute trg mask |
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[11656] | 295 | IF (cdcstype == 'rnf' .AND. zcsfw > 0._wp) THEN |
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[11629] | 296 | zsurftrg = psurf_opnsea(1) ! change the target area surface |
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| 297 | imsk_trg = kcsgrp(jcs) * kmsk_opnsea ! trg mask is now the open sea mask |
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[11295] | 298 | ELSE |
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| 299 | zsurftrg = psurftrg(jcs) |
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[11629] | 300 | imsk_trg = kmsk_grp * kmsk_opnsea |
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[11295] | 301 | END IF |
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| 302 | ! |
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[11656] | 303 | !! 3. Subtract residuals from source points |
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| 304 | zcsfwf = zcsfw / zsurfsrc |
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| 305 | pwcs(:,:) = pwcs(:,:) - zcsfwf * imsk_src(:,:) |
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| 306 | pqcs(:,:) = pqcs(:,:) + rcp * zcsfwf * sst_m(:,:) * imsk_src(:,:) |
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| 307 | ! |
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| 308 | !! 4. Add residuals to target points |
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| 309 | !! Do not use pqcs(:,:) = pqcs(:,:) - rcp * zcsfw * sst_m(:,:) / zsurftrg |
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| 310 | !! as there is no reason for heat conservation with this formulation |
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| 311 | zcsh = glob_sum( 'closea', e1e2t(:,:) * rcp * zcsfwf * sst_m(:,:) * imsk_src(:,:) ) |
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[11295] | 312 | WHERE( imsk_trg(:,:) == kcsgrp(jcs) ) |
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[11656] | 313 | pwcs(:,:) = pwcs(:,:) + zcsfw / zsurftrg |
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| 314 | pqcs(:,:) = pqcs(:,:) - zcsh / zsurftrg |
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[11295] | 315 | ENDWHERE |
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| 316 | ! |
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| 317 | END DO ! jcs |
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| 318 | |
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| 319 | END SUBROUTINE |
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| 320 | |
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[11629] | 321 | SUBROUTINE alloc_csarr( klen, pvarsrc, pvartrg, kvargrp ) |
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[11295] | 322 | !!----------------------------------------------------------------------- |
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| 323 | !! *** routine alloc_cssurf *** |
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| 324 | !! |
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[11629] | 325 | !! ** Purpose : allocate closed sea surface array |
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[11295] | 326 | !!---------------------------------------------------------------------- |
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| 327 | ! subroutine parameters |
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[11629] | 328 | INTEGER, INTENT(in) :: klen |
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| 329 | INTEGER, ALLOCATABLE, DIMENSION(:), INTENT( out) :: kvargrp |
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| 330 | REAL(wp), ALLOCATABLE, DIMENSION(:), INTENT( out) :: pvarsrc, pvartrg |
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[11295] | 331 | ! |
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| 332 | ! local variables |
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| 333 | INTEGER :: ierr |
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| 334 | !!---------------------------------------------------------------------- |
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| 335 | ! |
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| 336 | ! klen (number of lake) can be zero so use MAX(klen,1) to avoid 0 length array |
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| 337 | ALLOCATE( pvarsrc(MAX(klen,1)) , pvartrg(MAX(klen,1)) , STAT=ierr ) |
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| 338 | IF( ierr /= 0 ) CALL ctl_stop( 'STOP', 'sbc_clo: failed to allocate surf array') |
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| 339 | ! |
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[11629] | 340 | ALLOCATE( kvargrp(MAX(klen,1)) , STAT=ierr ) |
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| 341 | IF( ierr /= 0 ) CALL ctl_stop( 'STOP', 'sbc_clo: failed to allocate group array') |
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| 342 | ! |
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[11295] | 343 | ! initialise to 0 |
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| 344 | pvarsrc(:) = 0.e0_wp |
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| 345 | pvartrg(:) = 0.e0_wp |
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[11629] | 346 | kvargrp(:) = 0 |
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[11295] | 347 | END SUBROUTINE |
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| 348 | |
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| 349 | END MODULE |
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